Add an API to reset export-handler configs.

config_map.erase() is only called in ExportHandler::finish_timespan().

When an export fails (throw) or is aborted, the export-handler's
config remains as is and the next export will run it again.

The export-handler is global, per session and
ExportHandler::add_export_config() only ever inserts or ignores insert.

This is in preparation to fix:
1) export to invalid path -> fail, error is thrown
2) correct path -> new config is inserted in the map
3) try to export again, first runs the not-completed export from (1)
  -> constant errors.

1 files changed, 2 insertions, 0 deletions

diff --git a/libs/ardour/ardour/export_handler.h b/libs/ardour/ardour/export_handler.h
index 352451c4a3..d9d268af01 100644
--- a/libs/ardour/ardour/export_handler.h
+++ b/libs/ardour/ardour/export_handler.h
@@ -124,6 +124,8 @@ class LIBARDOUR_API ExportHandler : public ExportElementFactory, public sigc::tr
 	bool soundcloud_open_page;
 	bool soundcloud_downloadable;
 
+	void reset ();
+
   private:
 
 	void handle_duplicate_format_extensions();